Liquid-fuel burner.



PATENTED MAY 5, 1903.

R. G. IKIRKWOOD. .LIQUID FUEL BURNER.4

APPLIOATION FILED ocT.`14, 1901.

N0 MODEL.

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Patented May 5, 19.03.

PATENT OEEICE.

ROBERT G. KIRKVOOD, OF PITTSBURG, PENNSYLVANIA.

'LIQUID-FU EL BURNER.

SPECIFICATION forming part of Letters Patent N o. 727,380, dated May 5, 1903.

Application filed October 14, 1901. Serial No. 78,629. (No model.)

To all whom it ina/y concern:

Be it known that I, ROBERT G. KIRKWooD, a citizen of the United States, residing at 23 Alpha Terrace, Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Liquid-Fuel Burners; and I do declare the following to be a full, clear, and eX- act description of the invention, such as willY enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My said invention relates to liquid-fuel burners.

The object of my invention is the production of a device for preparing petroleum or other oils as fuel for steam-boilers or furnaces of dierent kinds by what is termed the spraying method, to provide suitable convenient devices for regulating and controlling the flow of the different elements of the fuel to the furnace and indicate the quantity of the same, and utilizing superheated steam to spray the oil and mix the inflowing air with the sprayed oil against a detlector'in the furnace for the purpose of scattering the spray over the furnace; and my invention further consists in the constructions and combinations and arrangements of parts, as hereinafter specified, and pointed out in the claims.

In the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts, Figure 1 is a sectional View, parts in elevation, of my improved burner. Fig. 2 is a front elevation of the collar, into which is entered the device in its application to a furnace. Fig. 3 is a detached vienT showing the regulating and indicating device for the oilsupply. Fig. 4 is a similar view to Fig. 3, showing the steam regulator and indicator; and Fig. 5 is a modified View of my invention.

In said drawings, A represents a tube forming the oil-chamber, which tube :is entered into a hole e in the sleeve C, which sleeve is built into the front of the furnace and is open to the air except to the inner projecting portion having the opening c. The tube A is internally bored at et to form a valve-seat for the tapered point b of the inner tube B, the tapered point b serving as a valve for regulating the oil-supply to the furnace. An inner circular ring ai is formed in tube A, constituting the back Wall of the oil chainber or tube A. A packing-nut E, provided with screw-threads, is entered into the screwthreaded portion of a2 of the expanded portion A. Said nut E is screwed up against the circular ring or fiange a3 and surrounds the inner tube B. Suitable packing is interposed between said ring and nut, forming a tight joint around the tube B to prevent escape of oil from chamber A. Oil is supplied to the chamber or tube A by pipe H, which is entered into said oil-tube by screw-threads and is connected with a suitable source of oil-supply.

The inner tube B constitutes the steampipe. A tapered end forming a valve for the oil-supply is provided on said tube, as described. At a point near the outer end of tube B and within the enlarged portion A of chamber A is provided a collar F, which surrounds the tube B and has a screwf passing through the collar and into said tube, by which the collar is rigidly attached to the tube, thus forming a shoulder or bearing against which the sleeve portion g of the oil regulator and indicator G has contact. Screw-threads on the outei` circumference of sleeve portion g/ engage with corresponding screw-threads a of the expanded portion A', and by turning lever Gr, which loosely surrounds tube B, to the right sleeve portion g', bearing against the rigid collar F, forces said collar, and with it the connected tube B,ltoward the end of the burner, thus closing or partly closing the space or valve a, in chamber A and cutting offtheoil-supply. At its rear or outer end tube B is provided with screw-threads b', by which said tube is rigidly connected to tubular portion D2, said portion D2 forming a shoulder or bearing against which the rear side of the regulator contacts. As the lever G is turned to the left the tube B is withdrawn by the action of said regulator bearing on the end portion of sleeve D2, thus opening or partly opening the oil-valve.

The expanded portion A is providedvwith a fiat circular side upon which is marked a The lever or regulator graduated scale G.

G is provided with a pointer gin suitable position to register with the scale, and when lever G is moved to operate the oil-valve the pointer, having been adjusted in proper relation, will indicate on the graduated scale the distance the valve b is moved from or toward its seat, thus indicating the quantity or flow of oil to the burner.

The steam-supply is controlled by rod D, provided with a tapered portion and needlepoint d at its inner end. Said rodis inclosed within the tube B and has a screw-threaded portion engaging the solid portion of piece D2. An operating-lever D is rigidly attached to the outer end of rod D. A needle or pointer d is adjusted in proper relation to the indicating-marks on the dat disk cl2, which is formed upon the end of portion D2. In operation when lever D is turned to either the right or left by its screw engagement with the threads on D2 the rod is entered or withdrawn in the tube B and by its tapered point or valve d' closes or opens the tapered valveseat b in tube B, thus shutting off or permitting the entrance of steam to the furnace. Steam from the boiler in a superheated state is supplied through pipe I, which is of a curved or arched form and liexible to allow for the. backward and forward movement of tube B, as explained. Said pipe I is connected, through a union-joint and pipe J, to the superheater L, which superheater is placed in suitable position in the furnace. The superheater is formed with a conical point L for breaking up and scattering the oil, thus rendering the oil which is sprayed against it in better condition for burning.

The sleeve or collar C is provided with apertures c for retaining pipes I and J and for retaining main steam-pipe K, which is connected to the boiler. With the exception of the bosses, in which are provided the apertures c and c', the sleeve C is entirely open to the air, and air is thus admitted to the furnace' through the collar for combustion.

In the modification shown in Fig. 5 the large tube l has an inlet 2 for steam, and the lsmaller inner tube 3 has inlet 4 for oil, the

introduction of the elements being reversed from the case with the form shown in Fig. 1.

The steam-supply is regulated and indicated by the device l, and the oil-supply is controlled and indicated by the device 3f, as will readily be understood.

Instead of using steam as a medium for spraying the oil I may use compressed air or other suitable means.

What I claim is- 1. In a liquid-fuel burner, the outer and inner tubes fashioned to form a valve as described, the inner tube having a valve-seat and inclosing a valve-rod adapted to fit said seat, one of said tubesbeing movable; a superheater, located in a furnace, and having flexible steam connection to said movable tube, and suitable regulating means for said valves, substantially as described.

2. An injector consisting essentially of two tubes one inclosing the other and fashioned to form a valve as described, a lever provided with a sleeve portion having screw connection with the oil-tube and surrounding the steam-tube and adapted to move said steamtube, fixed front and rear bearing-rings on the inner tube for said sleeve portion, and a Valve-rod having suitable regulating means within the inner tube adapted to form a valve in one end thereof, combined with a flexible steam-pipe connecting the steam-tube to the furnace, substantially as described.

3. In a liquid-fuel burner, the movable and fixed tubes forming a Valve as described, the movable tube inclosing a valve-rod adapted totit a seat in said tube, combined with a superheater located in a furnace, and a flexible steam-supply pipe from the superheater to said movable tube, allcombined substantially as described.

4. In a device of the character described, a conical-shaped superheater, substantially as shown, located in a furnace, an oil-injector having a movable tube as described, and flexible steam connection from said movable tube to said superheater, all combined substantially as described. Y

In testimony1 whereof I affix my signature in presence of two witnesses.

ROBERT G. KIRK WOOD.

Witnesses:

FRED R. HERTZOG, R. H. DEMPsEY. 

